Adjacent Generation

Analysis

Within 25 miles of the site, 26 qualifying generators deliver 5832.0 MW of total operating capacity; dominated by Nuclear (2708.6 MW, 46%); The site falls within the Electric Reliability Council of Texas, Inc. balancing authority.

South Texas Project contributes 2,708.6 MW of nuclear baseload across 2 units at 17.5 miles from the site. Gas-fired generation totals 673.9 MW from Sweeny Cogen Facility (572.0 MW, 4 units, 9.1 mi), Texas Gulf Sulphur (101.9 MW, 1 units, 20.3 mi). Solar generation (1,540.0 MW, 8 units) provides renewable capacity. Wind generation (759.9 MW, 4 units) adds additional renewable capacity. Other resources including battery storage account for 149.6 MW across 7 units.

Wind and Solar together comprise 39.4% of total operating capacity. below the 50% intermittent-dominant threshold, so no intermittent penalty applies. No qualifying generators have announced retirements within the next 10 years, so no retirement risk penalty applies. The scored total equals the raw Total Operating MW of 5,832.0 MW.

Sentinel value flagged: GulfStar Power, LLC (BESS) reports 300.0 MW — median for Other is 9.9 MW. Excluded from MW summation; manual confirmation required.

Data vintage: EIA-860 2025 early release (retrieved 2026-08-20). Final release data may differ slightly from early release figures.

Next Steps

• Confirm interconnection capacity and queue position with ERCOT for the nearest substations serving South Texas Project and Sweeny Cogen Facility
• Evaluate transmission line capacity between South Texas Project and Sweeny Cogen Facility generation centers and the site for direct load service
• Monitor EIA-860 final release for updated capacity figures and any newly announced retirements
• Assess battery storage project pipeline (multiple planned BESS projects in the area) for grid flexibility benefits